CN103787211A - Anti-fall control device for tower crane lifting - Google Patents
Anti-fall control device for tower crane lifting Download PDFInfo
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- CN103787211A CN103787211A CN201410039425.3A CN201410039425A CN103787211A CN 103787211 A CN103787211 A CN 103787211A CN 201410039425 A CN201410039425 A CN 201410039425A CN 103787211 A CN103787211 A CN 103787211A
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- jacking
- pivot shaft
- pawl
- oil cylinder
- climbing
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Abstract
The invention discloses an anti-fall control device for tower crane lifting, belonging to the technical field of tower cranes. The anti-fall control device comprises a climbing frame (1) and steps (6), wherein the climbing frame comprises an oil cylinder beam, a lifting oil cylinder and a lifting beam, and climbing claws (3) are arranged on the oil cylinder beam; the steps are arranged on the outer side of a standard joint, the climbing pawls are suspension pawls which are articulated onto lug plates (2-1) welded on the oil cylinder beam through a pawl shaft (3-1), and the distance between the center of the pawl shaft and a main chord member of the standard joint is smaller than the length of each suspension pawl; fixing holes (6-1) for supporting lifting beam supporting shafts (5-2) are formed in the middles of the steps, and positioning grooves (6-2) are formed in the upper end and the lower end; telescopic mechanisms are arranged at two ends of the lifting beam. Manual operation is not required when the climbing frame passes through the standard joint steps, the lifting beam penetrates into the central hole of the standard joint step through a telescopic supporting shaft, the telescopic supporting shaft is positioned by using a safety pin so that telescopic misoperation of the oil cylinder is prevented, and the safety and reliability are high.
Description
Technical field
The present invention relates to a kind of anticreep control setup, specifically a kind of tower machine jacking anticreep control setup, belongs to tower crane technical field.
Background technology
Tower crane accidents mostly occurs in Assembly &Disassembly process according to statistics, and safety problem when jacking is particularly outstanding.In existing design, as depicted in figs. 1 and 2, the climbing support 1 of tower crane mainly comprises oil cylinder beam 2, climbs pawl 3, jacking cylinder 4 and jacking cross beam 5, climbing support 1 is supported on marking time on 6 upper surfaces of main chord of standard section 7 by climbing pawl 3, bottom connects jacking cross beam 5 by jacking cylinder 4, is supported in 6 the circular groove of marking time.Realizing the conversion of jacking cross beam between marking time up and down by jacking cylinder flexible supports.With flexible jacking cross beam the locking and unlocking on marking time of realizing of locking pin.This kind of version exists that following some is not enough: (1) climbing support climb and decline process in, climb when pawl is marked time by standard knot and need to assist manually, there is potential safety hazard.(2) in jacking process, climbing pawl needs hand rotation to climb pawl when marking time, and working strength is large.Owing to climbing the scantling of structure restriction of pawl, Pa Zhaoliang center is large with the distance of marking time, and climbs pawl beam and need to bear very large eccentric torque, and climbing pawl beam needs local reinforcement, structure heaviness.(3) to support bearing pin be to be placed in the circular groove of the upper end of marking time to jacking cross beam, and with Φ 20mm lock pin anticreep, locking pin diameter is less, once occur the maloperation of receipts oil cylinder, can not effectively lock jacking cross beam, and safety and reliability is low.
Summary of the invention
The invention provides a kind of tower machine jacking anticreep control setup, improve the safety and reliability operating when climbing support climbs or declines, effectively prevent the safety misadventure that maloperation and structural distortion cause.
For solving the problems of the technologies described above, a kind of tower machine of the present invention jacking anticreep control setup, comprises climbing support and marks time, described climbing support comprises oil cylinder beam, jacking cylinder and jacking cross beam, on described oil cylinder beam, is provided with and climbs pawl; Described marking time is arranged on standard knot outside, described in climb pawl for hanging ratchet, hang ratchet and be articulated and connected on the otic placode being welded on oil cylinder beam by pawl axis, the distance between pawl axis center and main chord of standard section is less than the length that hangs ratchet; In the middle of described marking time, be provided with the fixed orifice for supporting jacking cross beam support axle, upper and lower two ends are provided with positioning groove.
As preferably, climb pawl support after and angle between main chord be 10～30 °.
Further, jacking cross beam two ends are provided with telescoping mechanism.
Further, telescoping mechanism comprises supporting seat, pivot shaft, spring and positioning plate; Described supporting seat and positioning plate are fixedly connected on jacking cross beam, and supporting seat is provided with the pilot hole with pivot shaft dimensional fits; Described pivot shaft front end is through supporting seat, and its rear end is provided with limited step, and can in the pilot hole of supporting seat, move freely front and back; Described spring is arranged between pivot shaft and positioning plate; Distance between described positioning plate front panel and supporting seat rear panel is less than the length of pivot shaft.
As preferably, pivot shaft front end is arranged to taper or spherical.
Further, telescoping mechanism also comprises the locating plate and the safety locking pin that are provided with knock hole, and described locating plate is fixedly connected between positioning plate and supporting seat, and is positioned at pivot shaft below; Described safety locking pin is fixedly connected on jacking cross beam by chain; The limited step of described pivot shaft rear end is provided with the knock hole coordinating with safety locking pin in the radial direction.
As preferably, positioning groove is circular groove.
Compared with prior art, the present invention has the following advantages:
1. the pawl of climbing of the present invention has adopted suspension pawl structures, climbing support hangs ratchet in jacking process can be accessible by marking time, without manually auxiliary, need to support time, only need very little strength can make to hang ratchet and turn to holding state, operating effort is little, labour intensity is low, and easy and simple to handle, safety has improved the jacking efficiency of climbing support effectively.
2. pawl axis of the present invention center is less than tradition to strong point eccentric throw and climbs pawl formula climbing support, and the moment of torsion that pawl axis bears is less, has alleviated structural weight.
3. jacking cross beam pivot shaft of the present invention adopts stretching structure, matches with safety locking pin, and the weight on climbing support top can bear jacking time, can effectively lock again jacking cross beam, bearing pin fracture while preventing oil cylinder maloperation.And safety locking pin inserts locking, not bearing load, structure safety and reliability in the time that pivot shaft stretches out.
4. the present invention is simple in structure, be easy to manufacture, and low cost of manufacture, and safety, reliability are high.
Accompanying drawing explanation
Fig. 1 is prior art integral structure schematic diagram;
Fig. 2 is prior art standard knot and the structural representation of marking time;
Fig. 3 is integral structure schematic diagram of the present invention;
Fig. 4 is the structural representation that the present invention hangs ratchet;
Fig. 5 is jacking cross beam holding state schematic diagram of the present invention;
Fig. 6 is that the present invention hangs ratchet holding state schematic diagram;
Fig. 7 is jacking cross beam structural representation of the present invention;
Fig. 8 is the enlarged diagram at A place in Fig. 7.
In figure: 1. climbing support, 2. oil cylinder beam, 2-1. otic placode, 3. climb pawl, 3-1. pawl axis, 4. jacking cylinder, 5. jacking cross beam, 5-1. safety locking pin, 5-2. pivot shaft, 5-3. supporting seat, 5-4. spring, 5-5. locating plate, 5-6. positioning plate, 6. marks time, 6-1. fixed orifice, 6-2. positioning groove, 7. main chord of standard section.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 3 to 5, a kind of tower machine of the present invention jacking anticreep control setup, comprises climbing support 1 and marks time 6, described climbing support 1 comprises oil cylinder beam 2, jacking cylinder 4 and jacking cross beam 5, on described oil cylinder beam 2, is provided with and climbs pawl 3; Described marking time 6 is arranged on standard knot outside, the described pawl 3 of climbing is for hanging ratchet, hanging ratchet is articulated and connected on the otic placode 2-1 being welded on oil cylinder beam 2 by pawl axis 3-1, distance between pawl axis 3-1 center and main chord of standard section 7 is less than the length that hangs ratchet, pawl 3 structures of climbing of climbing support 1 are to hang ratchet, hang ratchet in vertical position under Action of Gravity Field, and climbing support 1 is by mark time 6 o'clock on main chord of standard section 7, without manual operation, improve staff's safety; Described 6 centres of marking time are provided with the fixed orifice 6-1 for supporting jacking cross beam 5 pivot shaft 5-2, and upper and lower two ends are provided with positioning groove 6-2; Described jacking cross beam 5 two ends are provided with telescoping mechanism.
As shown in Figure 6, as improvement of the present invention, for the moment of torsion that pawl axis 3-1 is born is less, alleviate structural weight, described in climb pawl 3 support after and angle between main chord of standard section 7 be 10～30 °.
As shown in Figure 7 and Figure 8, as improvement of the present invention, for make jacking cross beam 5 play the effect of supporting and locking simultaneously, alleviate installer's labour intensity, further effectively prevent jacking cross beam 5 and climb pawl 3 disengagings and mark time, effectively prevent the flexible maloperation of jacking cylinder 4, improve the safety and reliability of climbing support 1, described telescoping mechanism comprises supporting seat 5-3, pivot shaft 5-2, spring 4 and positioning plate 5-6; Described supporting seat 5-3 and positioning plate 5-6 are fixedly connected on jacking cross beam 5, and supporting seat 5-3 is provided with the pilot hole with pivot shaft 5-2 dimensional fits; Described pivot shaft 5-2 front end is through supporting seat 5-3, and its rear end is provided with limited step 5-7, and can in the pilot hole of supporting seat 5-3, move freely front and back; Described spring 4 is arranged between pivot shaft 5-2 and positioning plate 5-6; Distance between described positioning plate 5-6 front panel and supporting seat 5-3 rear panel is less than the length of pivot shaft 5-2.Described telescoping mechanism also comprises the locating plate 5-5 and the safety locking pin 5-1 that are provided with knock hole, and described locating plate 5-5 is fixedly connected between positioning plate 5-6 and supporting seat 5-3, and is positioned at pivot shaft 5-2 below; Described safety locking pin 5-1 is fixedly connected on jacking cross beam 5 by chain; The limited step of described pivot shaft 5-2 rear end is provided with the knock hole coordinating with safety locking pin 5-1 in the radial direction.
Described jacking cross beam 5 penetrates in 6 the fixed orifice 6-1 of marking time on main chord of standard section 7 by pivot shaft 5-2 flexible, and with safety locking pin 5-1 lock support axle 5-2, can in the time that stretching out, pivot shaft 5-2 effectively lock the position of jacking cross beam 5, safe and reliable, effectively fix jacking cross beam 5, effectively prevented the flexible maloperation of jacking cylinder 4 simultaneously.
As a further improvement on the present invention, described pivot shaft 5-2 front end is arranged to taper or spherical, can effectively reduce friction force, pivot shaft 5-2 is more easily penetrated mark time the fixed orifice 6-1 on 6, fixes fast jacking cross beam 5.
As shown in Figure 5, as a further improvement on the present invention, described positioning groove 6-2 is circular groove, matches with hanging the bottom of ratchet, contacts more firmly, and reliability is higher.
The present invention hangs ratchet and is fixed on by pawl axis 3-1 on the welding otic placode 2-1 of oil cylinder beam 2, forms articulated structure, can swing along pawl axis 3-1.Climbing support 1, in the process of climbing, hangs ratchet and under Action of Gravity Field, keeps vertically, 6 does not have interference with marking time, and climbing support 1 does not need human assistance at 6 o'clock by marking time.Hang when ratchet supports and need manually to assist, but operating effort is little, labour intensity is low.
Tower machine jacking anticreep control setup of the present invention is climbed pawl 3 upper strata and is changed suspension ratchet into, has guaranteed that climbing support 1 structure still can provide good support in the time of stress deformation.And the pivot shaft 5-2 of jacking cross beam 5 changes stretching structure into, play the effect of supporting and locking simultaneously, effectively prevent the flexible maloperation of jacking cylinder 4, further improve the safety and reliability of climbing support.
Claims (6)
1. a tower machine jacking anticreep control setup, comprises climbing support (1) and mark time (6), and described climbing support (1) comprises oil cylinder beam (2), jacking cylinder (4) and jacking cross beam (5), is provided with and climbs pawl (3) on described oil cylinder beam (2); Described marking time (6) is arranged on standard knot outside, it is characterized in that, the described pawl (3) of climbing is for hanging ratchet, hang ratchet and be articulated and connected on the otic placode (2-1) being welded on oil cylinder beam (2) by pawl axis (3-1), the distance between pawl axis (3-1) center and main chord of standard section (7) is less than the length that hangs ratchet; In the middle of described marking time (6), be provided with the fixed orifice (6-1) for supporting jacking cross beam (5) pivot shaft (5-2), upper and lower two ends are provided with positioning groove (6-2); Described jacking cross beam (5) two ends are provided with telescoping mechanism.
2. a kind of tower machine jacking anticreep control setup according to claim 1, is characterized in that, the angle after climbing pawl (3) support and between main chord of standard section (7) is 10～30 °.
3. a kind of tower machine jacking anticreep control setup according to claim 2, is characterized in that, described telescoping mechanism comprises supporting seat (5-3), pivot shaft (5-2), spring (4) and positioning plate (5-6); Described supporting seat (5-3) is fixedly connected on jacking cross beam (5) with positioning plate (5-6), and supporting seat (5-3) is provided with the pilot hole with pivot shaft (5-2) dimensional fits; Described pivot shaft (5-2) front end is through supporting seat (5-3), and its rear end is provided with limited step (5-7), and can in the pilot hole of supporting seat (5-3), move freely front and back; Described spring (4) is arranged between pivot shaft (5-2) and positioning plate (5-6); Distance between described positioning plate (5-6) front panel and supporting seat (5-3) rear panel is less than the length of pivot shaft (5-2).
4. a kind of tower machine jacking anticreep control setup according to claim 3, it is characterized in that, described telescoping mechanism also comprises the locating plate (5-5) and the safety locking pin (5-1) that are provided with knock hole, described locating plate (5-5) is fixedly connected between positioning plate (5-6) and supporting seat (5-3), and is positioned at pivot shaft (5-2) below; Described safety locking pin (5-1) is fixedly connected on jacking cross beam (5) by chain; The limited step of described pivot shaft (5-2) rear end is provided with the knock hole coordinating with safety locking pin (5-1) in the radial direction.
5. a kind of tower machine jacking anticreep control setup according to claim 3, is characterized in that, described pivot shaft (5-2) front end is arranged to taper or spherical.
6. a kind of tower machine jacking anticreep control setup according to claim 1, is characterized in that, described positioning groove (6-2) is circular groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410039425.3A CN103787211B (en) | 2014-01-27 | 2014-01-27 | A kind of tower machine jacking anticreep control setup |
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| CN201410039425.3A CN103787211B (en) | 2014-01-27 | 2014-01-27 | A kind of tower machine jacking anticreep control setup |
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| CN103787211A true CN103787211A (en) | 2014-05-14 |
| CN103787211B CN103787211B (en) | 2016-04-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429890A (en) * | 2016-08-24 | 2017-02-22 | 无锡科通工程机械制造有限公司 | Anti-falling device |
| CN110203838A (en) * | 2019-06-27 | 2019-09-06 | 陕西建设机械股份有限公司 | A kind of tower crane stock climbs and descending mechanism and its application method |
| CN114476088A (en) * | 2022-01-19 | 2022-05-13 | 东莞市毅新庆江机械制造有限公司 | Parachuting tower |
| CN115123943A (en) * | 2022-08-05 | 2022-09-30 | 徐州建机工程机械有限公司 | Installation method of hydraulic oil cylinder of large tower crane |
| CN115490164A (en) * | 2022-09-22 | 2022-12-20 | 徐州建机工程机械有限公司 | Anti-falling structure and anti-falling method for climbing process of tower crane and tower crane |
| CN115744670A (en) * | 2022-11-30 | 2023-03-07 | 徐州圣淮机械有限公司 | Anti-falling mechanism for jacking cross beam of tower crane |
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| CN203699727U (en) * | 2014-01-27 | 2014-07-09 | 徐州建机工程机械有限公司 | Tower crane jacking anti-dropping control device |
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| JPH03232691A (en) * | 1990-02-06 | 1991-10-16 | Koshihara:Kk | Support frame assembling method for construction tower crane and device thereof |
| JPH08324972A (en) * | 1995-06-01 | 1996-12-10 | Yamagata Hitachi Kenki Kk | Mast guide holder for climbing crane |
| JP4587765B2 (en) * | 2004-10-01 | 2010-11-24 | 戸田建設株式会社 | Reaction force receiving structure of climbing crane |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429890A (en) * | 2016-08-24 | 2017-02-22 | 无锡科通工程机械制造有限公司 | Anti-falling device |
| CN110203838A (en) * | 2019-06-27 | 2019-09-06 | 陕西建设机械股份有限公司 | A kind of tower crane stock climbs and descending mechanism and its application method |
| CN114476088A (en) * | 2022-01-19 | 2022-05-13 | 东莞市毅新庆江机械制造有限公司 | Parachuting tower |
| CN114476088B (en) * | 2022-01-19 | 2023-03-10 | 东莞市毅新庆江机械制造有限公司 | Parachuting tower |
| CN115123943A (en) * | 2022-08-05 | 2022-09-30 | 徐州建机工程机械有限公司 | Installation method of hydraulic oil cylinder of large tower crane |
| CN115490164A (en) * | 2022-09-22 | 2022-12-20 | 徐州建机工程机械有限公司 | Anti-falling structure and anti-falling method for climbing process of tower crane and tower crane |
| CN115744670A (en) * | 2022-11-30 | 2023-03-07 | 徐州圣淮机械有限公司 | Anti-falling mechanism for jacking cross beam of tower crane |
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|---|---|
| CN103787211B (en) | 2016-04-06 |
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